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Electrical Switchyard

The generated electricity is then routed to the 220kV Electrical Switchyard Compound, and from there is exported onto the ESB Network.

  • Transmission of electricity to the National Grid (A Step-Up Transformer)

    Alternating current is used for commercial electricity transmission on account of the ease and efficiency with which its voltage can be stepped. Power is generated at 21kV in Aghada but it is exported to the national grid at 220kV. The reason for the high voltage is to reduce the current during transmission and this lowers the power loss and so it is the more efficient way of transmitting electrical power. The product of voltage and current is a constant so they are directly proportional to each other when we step up the voltage the current goes down and this leads to far less energy loss during the transmission.